[Qemu-devel] Re: [Bochs-developers] [PATCH] Add DPMS support to cirrus vga bios.

["Sebastian Herbszt" <herbszt@gmx.de>]

Gleb Natapov wrote:

> I am not sure who maintains vgabios :(

Volker does at http://www.nongnu.org/vgabios/

- Sebastian
 
> Signed-off-by: Gleb Natapov <gleb@redhat.com>
> 
> diff --git a/vgabios/clext.c b/vgabios/clext.c
> index ea37ec5..c7a2ad0 100644
> --- a/vgabios/clext.c
> +++ b/vgabios/clext.c
> @@ -510,7 +510,7 @@ cirrus_vesa:
> #ifdef CIRRUS_DEBUG
>   call cirrus_debug_dump
> #endif
> -  cmp al, #0x0F
> +  cmp al, #0x10
>   ja cirrus_vesa_not_handled
>   push bx
>   xor bx, bx
> @@ -1196,6 +1196,37 @@ cirrus_vesa_07h_2:
>   mov  ax, #0x004f
>   ret
> 
> +cirrus_vesa_10h:
> +  cmp bl, #0x00
> +  jne cirrus_vesa_10h_01
> +  mov bx, #0x0f30
> +  mov ax, #0x004f
> +  ret
> +cirrus_vesa_10h_01:
> +  cmp bl, #0x01
> +  jne cirrus_vesa_10h_02
> +  push dx
> +  push ds
> +  mov dx, #0x40
> +  mov ds, dx
> +  mov [0xb9], bh
> +  pop ds
> +  pop dx
> +  mov ax, #0x004f
> +  ret
> +cirrus_vesa_10h_02:
> +  cmp bl, #0x02
> +  jne cirrus_vesa_unimplemented
> +  push dx
> +  push ds
> +  mov dx, #0x40
> +  mov ds, dx
> +  mov bh, [0xb9]
> +  pop ds
> +  pop dx
> +  mov ax, #0x004f
> +  ret
> +
> cirrus_vesa_unimplemented:
>   mov ax, #0x014F ;; not implemented
>   ret
> @@ -1612,7 +1643,8 @@ cirrus_vesa_handlers:
>   dw cirrus_vesa_unimplemented
>   dw cirrus_vesa_unimplemented
>   dw cirrus_vesa_unimplemented
> -
> +  ;; 10h
> +  dw cirrus_vesa_10h
> 
> 
> ASM_END
> --
> Gleb.